Jvc RXDP 10 VBK Service Manual

Page 2

RX-DP10VBK/RX-DP1OVSL
RX-DP10RSL

-Safety Precautions

1. This design of this product contains special hardware and many circuits and components specially for safety
purposes. For continued protection, no changes should be made to the original design unless authorized in
writing by the manufacturer. Replacement parts must be identical to those used in the original circuits. Services
should be performed by qualified personnel only.

2. Alterations of the design or circuitry of the product should not be made. Any design alterations of the product
should not be made. Any design alterations or additions will void the manufacturer's warranty and will further
relieve the manufacture of responsibility for personal injury or property damage resulting therefrom.

3. Many electrical and mechanical parts in the products have special safety»related characteristics. These
characteristics are often not evident from visual inspection nor can the protection afforded by them necessarily
be obtained by using replacement components rated for higher voltage, wattage, etc. Replacement parts which
have these special safety characteristics are identified in the Parts List of Service Manual. Electrical
components having such features are identified by shading on the schematics and by (/i\) on the Parts List in
the Service Manual. The use of a substitute replacement which does not have the same safety characteristics
as the recommended replacement parts shown in the Parts List of Service Manual may create shock, fire, or
other hazards.

4. The leads in the products are routed and dressed with ties, clamps, tubings, barriers and the like to be
separated from live parts, high temperature parts, moving parts and/or sharp edges for the prevention of
electric shock and fire hazard. When service is required, the original lead routing and dress should be
observed, and it should be confirmed that they have been returned to normal, after re-assembling.

5. Leakage current check (Electrical shock hazard testing)

After reassembling the product, always perform an isolation check on the exposed metal parts of the product

(antenna terminals, knobs, metal cabinet, screw heads, headphone jack, control shafts, etc.) to be sure the

product is safe to operate without danger of electrical shock.

Do not use a line isolation transformer during this check.

0 Plug the AC line cord directly into the AC outlet. Using a "Leakage Current Tester", measure the leakage
current from each exposed metal parts of the cabinet, particularly any exposed metal part having a return
path to the chassis, to a known good earth ground. Any leakage current must not exceed 0.5mA AC (r.m.s.).

0 Alternate check method
Plug the AC line cord directly into the AC outlet. Use an AC voltmeter having, 1,000 ohms per volt or more
sensitivity in the following manner. Connect a 1,500 Q10W resistor paralleled by a 0.15M F AC-type capacitor

between an exposed metal part and a known good earth ground. AC VOLTMETER
Measure the AC voltage across the resistor with the AC a (Having1000
voltmeter. ohms/volts, .. .
Move the resistor connection to each exposed metal part, c °m°e sens'mml)

particularly any exposed metal part having a return path to
the chassis, and measure the AC voltage across the resistor.

0.1511 F AC TYPE

Now, reverse the plug in the AC outlet and repeat each -"| Placeihis
measurement. Voltage measured any must not exceed 0.75 V W . e :géfieeigosed
AC (r.m.s.). This corresponds to 0.5 mA AC (r.m.s.). 15009 10W metal part.
Good earth ground
-Warning A CAUTION

1.This equipment has been designed and manufactured to meet international safety standards.
2. It is the legal responsibility of the repairer to ensure that these safety standards are maintained.
3. Repairs must be made in accordance with the relevant safety standards.

4. It is essential that safety critical components are replaced by approved parts.

5. If mains voltage selector is provided, check setting for local voltage.

Burrs formed during molding may
be left over on some parts of the
chassis. Therefore, pay attention to
such burrs in the case of
preforming repair of this system.

In regard with component parts appearing on the silk-screen printed side (parts side) of the PWB diagrams, the
parts that are printed over with black such as the resistor (-), diode (h) and ICP (Q) or identified by the "A"
mark nearby are critical for safety.

When replacing them, be sure to use the parts of the same type and rating as specified by the manufacturer.
(Except the J&C version)

Page 8

RX-DP10VBK/RX-DP1OVSL
RX-DP10RSL

I Removing the video SEP board
(See Fig.13)

Note :Video SEP board is not in B/E/EN version.

- Prior to performing the following procedures, remove
the top cover and the rear panel.

1. Disconnect the connector CN501 on the video SEP
board. While removing the claw of the connector
CN9, pull out the video SEP board.

I Removing the input base board
(See Fig.14)
- Prior to performing the following procedure, remove
the top cover, rear panel, DSP board, audio signal 1
board, audio signal 2 board, video board, 3 video
board and video SEP board.

1. Cut off the tie bands fixing the harnesses.

2. Disconnect the harnesses from the connector CN11,
CN16 and CN17 on the input base board.

3. Disconnect the harnesses from the connector CN63

on the power supply 1 board and CN42 on the power

supply 2 board.

4. Disconnect the harnesses from the connector CN
743 on the speaker board.

5. Remove the seven screws H attaching the input
base board.

I Removing the speaker board (See Fig.14) Input base
board

- Prior to performing the following procedure, remove
the top cover and rear panel.

Attention ISpeaker board is attached the rear
panel by screws.

1. Cut off the tie band fixing the harnesses.

2. Disconnect the harnesses from the connector
CN741, CN742 and CN743 on the speaker board.

lRemoving the compu link board

(See Fig.15)
- Prior to performing the following procedure, remove
the top cover and rear panel.

Attention :Compu link board is attached the
rear panel by screws.

1. Cut off the tie band fixing the harnesses.

2. Disconnect the harness from the connector CN301
on the compu link board.

1-8

THE INTRODUCTORY NOTES in Figs :
Gray parts do not correspond to B/EIEN
version.

CN63
(on Power
supply 1 board)

CN42

(on Power

supply 2 board)
:\

1
CN743 Speaker board

Fig.14

Tie band